conditional tense

The conditional (would) tense is relatively simple to form in Spanish because the endings are added to the infinitive. Verbs endings are the same for all verbs -ar, - er, or -ir. All endings in the conditional tense carry an accent.

The conditional tense is used to indicate the possibility of an action that is related to specific circumstances.

Me gustaría ir contigo al cine.	- I would like to go with you to the movies.
Yo bebería leche pero no hay.	- I would drink milk, but there isn't any.
Ella llamaría al médico en caso de emergencia.	- She would call the doctor in case of an emergency.

It is also used to express the probability that an action occurred in the past.
Después de viajar tantas horas, estarían cansados.	After traveling so many hours, they were probably tired (or they must have been tired).

Examples of verbs in the future tense:

Subject pronoun	ayudar	aprender	abrir
yo	ayudaría	aprendería	abriría
tú	ayudarías	aprenderías	abrirías
él, ella, usted	ayudaría	aprendería	abriría
nosotros	ayudaríamos	aprenderíamos	abriríamos
vosotros	ayudaríais	aprenderíais	abriríais
ellos, ellas, ustedes	ayudarían	aprenderían	abrirían

Irregular verbs
The following verbs drop the "e" in the infinitive before adding the endings of the conditional.
caber	to fit	cabría, -ías, ía, etc.
haber	to be (aux. verb)	habría, -ías, ía, etc.
poder	to be able	podría, -ías, ía, etc.
querer	to want	querría, -ías, ía, etc.
saber	to know	sabría, -ías, ía, etc.

The following verbs replace the "e" or "i" of the infinitive with a "d" before adding the endings of the conditional.
poner	to put	pondría, -ías, ía, etc.
salir	to leave	saldría, -ías, ía, etc.
tener	to have	tendría, -ías, ía, etc.
valer	to be worth	valdría, -ías, ía, etc.
venir	to come	vendría, -ías, ía, etc.

The following verbs drop the "e" and "c" of the infinitive before adding the endings of the conditional.
decir	to say, tell	diría, -ías, ía, etc.
hacer	to do, make	haría, -ías, ía, etc.

Subject pronoun